Kenley Jansen out indefinitely

Mark Saxon covers the St. Louis Cardinals for ESPN.com. He served as the Dodgers team reporter for ESPNLosAngeles.com. through the 2015 season. He spent six years at the Orange County Register, and began his career at the Oakland Tribune, where he started an 11-year journey covering Major League Baseball. He has also covered colleges, including USC football and UCLA basketball.

The Los Angeles Dodgers remain hopeful that closer Kenley Jansen will pitch again this season. He was held out of Wednesday's game in Colorado after experiencing a recurrence of an irregular heartbeat that first surfaced last season.

"There are good scenarios and there are bad scenarios," manager Don Mattingly said. "We just don't know which one we're going to get at this point."

Jansen met with a Los Angeles cardiologist Thursday. The Dodgers didn't release details of his examination.

"We have to make sure he does everything he has to do to make sure he's taking care of himself and we need to understand exactly what we should be doing to help him take care of himself," Mattingly said. "We're lucky. We're in L.A., with some of the best doctors in the world."

Until Jansen returns, Mattingly said he will choose between Brandon League, a former closer in Seattle, and setup man Ronald Belisario in save situations.

Jansen has enjoyed an outstanding season as the Dodgers' closer, going 5-3 with a 2.54 ERA and 25 saves.